StockAvg

Average Down Calculator

See how buying more at a lower price changes your average.

Your trades never leave your browser — all math runs locally.

Try: Lots (shares, price, fee)=100,50,0,100,40,0 → 200.0000, $9,000, $0, $45

How to use

Add a lower-priced lot and the calculator shows the new, lower average cost. Averaging down only helps if the price later recovers.

FAQ

Does averaging down always help?

It lowers your break-even, but if the price keeps falling you simply lose more.

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